The weight of dumbbell rod can be adjusted by one hand: 2kg-20kg for men and 1kg- 10kg for women. Dumbbell is an auxiliary equipment for weightlifting and fitness. Smaller than a barbell. The weight of the light dumbbell is 1, 2, 3, 5, 8, 12 lb (1 lb =0.4536 kg) and so on. The weights of heavy dumbbells are 10, 15, 30 kg, etc. Therefore, the weight of one-handed adjustable dumbbell rod for men is 2kg-20kg, and that for women is 1kg- 10kg.